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iHeartRadio Music Festival 2014 Lineup Revealed!

The lineup for the 2014 iHeartRadio Music Festival has been revealed, and it's EPIC! This morning, Ryan Seacrest announced who will take the stage at the MGM Grand this year - the fourth year of the legendary festival.

The iHeartRadio Music Festival will be broadcast live on Clear Channel Radio Stations, exclusively streamed live on Yahoo! Screen, and air as an exclusive two-night special on The CW on September 29th and 30th.

Check out an exclusive mash-up featuring this year's performing artists!